Golang 1.25.x < 1.25.12 / 1.26.x < 1.26.5 Multiple Vulnerabilities

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
##

include('compat.inc');

if (description)
{
  script_id(327411);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/07/16");

  script_cve_id("CVE-2026-39822", "CVE-2026-42505");

  script_name(english:"Golang 1.25.x < 1.25.12 / 1.26.x < 1.26.5 Multiple Vulnerabilities");

  script_set_attribute(attribute:"synopsis", value:
"An application installed on the remote host is affected by multiple vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"The version of Golang running on the remote host is 1.25.x prior to 1.25.12 or 1.26.x prior to 1.26.5. It is,
therefore, affected by multiple vulnerabilities:

  - On Unix systems, opening a file in an os.Root improperly follows symlinks to locations outside of the Root
    when the final path component of a path is a symbolic link and the path ends in a slash. (CVE-2026-39822)

  - Handshakes which used Encrypted Client Hello could be de-anonymized by a passive network observer due to a
    disclosure of pre-shared key identities in the unencrypted client hello. (CVE-2026-42505)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version
number.");
  script_set_attribute(attribute:"see_also", value:"https://github.com/golang/go/issues/79005");
  script_set_attribute(attribute:"see_also", value:"https://github.com/golang/go/issues/79282");
  script_set_attribute(attribute:"see_also", value:"https://groups.google.com/g/golang-announce/c/OrmQE_Yp5Sc");
  script_set_attribute(attribute:"solution", value:
"Upgrade to Golang Go version 1.25.12, 1.26.5, or later.");
  script_set_attribute(attribute:"agent", value:"all");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:S/C:C/I:C/A:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2026-39822");

  script_set_attribute(attribute:"vuln_publication_date", value:"2026/07/07");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/07/07");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/07/16");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:golang:go");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Misc.");

  script_copyright(english:"This script is Copyright (C) 2026 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("golang_win_installed.nbin", "golang_macos_installed.nbin");
  script_require_keys("installed_sw/Golang Go Programming Language");

  exit(0);
}

include('vdf.inc');

# @tvdl-content
var vuln_data = {
  'metadata': {'spec_version': '1.0'},
  'checks': [
    {
      'product': {'name': 'Golang Go Programming Language', 'type': 'app'},
      'check_algorithm': 'default',
      'constraints': [
        {'min_version': '1.25.0', 'fixed_version': '1.25.12'},
        {'min_version': '1.26.0', 'fixed_version': '1.26.5'}
      ]
    }
  ]
};

var result = vdf::check_and_report(vuln_data:vuln_data, severity:SECURITY_WARNING);
vdf::handle_check_and_report_errors(vdf_result:result);